Updated at 1:52 p.m. Saturday: John Clark Keller has been found safe and in good health, Fort Worth police say.
Original post: A Silver Alert has been issued for a missing 80-year-old man last seen Friday morning in Fort Worth.
John Clark Keller was seen at 10:45 a.m. in the 5700 block of Edwards Ranch Road driving a maroon 2014 Buick Enclave with Texas license plate JSV 4100.
Keller is a 6-foot-4 white man who weighs about 240 pounds. He has gray hair and brown eyes and was wearing a green shirt and blue jeans when he was last seen. He has be diagnosed with a cognitive impairment.
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Law enforcement think Keller's disappearance poses a credible threat to his health and safety.
Anyone with information about his location may call Fort Worth police at 817-392-4222.